卡套式端對接直通管接頭
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本標準規定了卡套式端對接直通管接頭，適用于油、氣及一般腐蝕性介質的管路系統。
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標記示例：
公稱壓力J級，管子外徑D0為14mm的卡套式端對接直通管接頭：
管接頭J14 GB/T3754.1-1983
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管子外徑D0
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公稱通徑DN
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d5
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d
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l
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l1≈
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L≈
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扳手尺寸
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e
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e1
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重 量（kg/100件）
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S
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S1
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G(25)
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4
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3
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M10×1
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16
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31
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15
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15
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17.3
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17.3
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3.08
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5
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3.5
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6
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4
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18.7
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36
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16
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18.5
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4.15
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8
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6
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M12×1.5
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12
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22
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40
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16
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18
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18.5
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20.8
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6.23
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10
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8
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M14×1.5
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23
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43
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18
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21
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20.8
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24.2
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8.02
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12
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10
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M16×1.5
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24
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44
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21
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24
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24.2
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27.7
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10.6
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14
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12
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M18×1.5
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24
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27.7
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12.1
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16
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14
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M22×1.5
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14
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25
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46
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27
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27
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31.2
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31.2
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16.2
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18
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15
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25.5
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30
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34.6
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18.9
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20
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17
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M27×2
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16
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27
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50
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34
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34
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39.3
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39.3
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26.5
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22
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19
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31.5
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55
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36
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41.6
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30.8
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25
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22
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M33×2
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18
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33.5
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59
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41
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41
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47.3
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47.3
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44.1
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28
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24
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34.5
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61
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47.5
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32
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27
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M42×2
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20
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36.5
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64
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50
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50
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57.7
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57.7
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47.9
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34
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30
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65
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68.3
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40
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34
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M50×2
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22
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37.5
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66
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60
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55
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69.3
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63.5
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90.1
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42
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36
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60
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69.3
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101
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J(40)
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6
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3
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M12×1.5/G1/8″
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12
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23
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41
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16
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18
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18.5
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20.8
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7.27
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8
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5
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M14×1.5/G1/4″
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24
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43
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18
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21
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20.8
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24.2
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9.06
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10
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7
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M16×1.5/G3/8″
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25.5
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46
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21
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24
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24.2
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27.7
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12.3
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12
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8
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M80×1.5/G(1/2″)
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26.5
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47
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24
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27.7
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15
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14
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10
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14
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27
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48
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27
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27
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31.2
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31.2
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18.3
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16
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12
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M22×1.5
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28
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50
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30
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34.6
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22.7
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18
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14
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29.5
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53
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30
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34
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34.6
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39.3
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25.5
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20
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16
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M27×2
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16
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34.5
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62
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34
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36
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39.3
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41.6
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36.6
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22
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18
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35.5
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64
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36
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41
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41.6
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47.3
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45.7
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25
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20
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M33×2
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18
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38
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67
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41
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47.3
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54.2
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28
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22
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39.5
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69
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46
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53.1
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63.4
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